Steam-generator.



No. 7|0,3l3. Patented Sept. 30, I902.

R. J. BARTON! STEAM GENERATOR.

v (Application filed Jan 10, 1902.) I

(No Model.) 2 Sheets-Sheet 2,

Tm:- uonms Ferns co, PMoro-u'mu, WASHINGTON, a c.

UNITED STATES ROBERT J. BARTON, OF PHILADELPHIA, PENNSYLVANIA.

STEAM-G EN ERATOR.

SPECIFICATION forming part of Letters Patent No. 710,313, dated September 30, 1902.

Application filed January 10, 1902. Serial No. 89,131. (No model.)

To all whom it may concern:

Be it known that I, ROBERT J. BARTON, a citizen of the United States, residing in Phila'-- delphia, Pennsylvania, have invented certain Improvements in Steam-Generators, of which the following is a specification.

The object of my invention is to so construct a steam-generator as to insure a large area of heating-surface, and thereby provide for the rapid generation of steam, this result being attained without any such departure from recognized principles of construction as will increase the expense of the generator or detract from its strength.

In the accompanying drawings, Figure 1 is a. longitudinal section of a steam-generator constructed in accordance with my invention; and Fig. 2' is a transverse section of the same on the line a Cb, Fig. 1. w

The generator is of the locomotive type that is to say, it has a fire-box l with bottom grate 2, fire-door 3, and ash-pit opening 4, this fire-box being surrounded by a waterchamber 5, the upper portion of which terminates in a steam-dome 6, the crown-sheet of the fire-box and the side walls of the same being stayed to the shell of the generator in the usual manner.

From the casing of the water-chamber which surrounds the fire-box projects a cylindrical barrel? but instead of said barrel being provided with longitudinal tubes leading from the fire-box to the smoke-chamber at the base of the stack in the ordinary manner said cylindrical barrel has a central longitudinal flue 9, which does not communicate with thefirebox, but is in free communication with the stack 10.

Surrounding the generator structure is a casing 11, inclosingacombustion-chamber 12,

which combustion-chamber is in communication with the fire-box through short transverse tubes 13, extending from the side walls of said fire-box to the side walls of the waterchamber surrounding the same, and in like manner the center fiue 9 of the cylindrical barrel 7 of the generator is in comm unication with the combustion-chamber 12 through short radial tubes 14, extending from the fluecasing to the casing of the barrel. As a result of this construction the products of combustion are first caused to pass through the fiue 9, and the internal surfaces of all of the tubes 13 and 14. Consequently rapid genera tion of steam-in large volume is insured, and the practically complete utilization of the heating properties of the products of combustion is attained.

The tubes 13 and 14 serve as stays for the shells which they connect, and thereby materially strengthen those portions of the generator in connection with which they are used and render unnecessary the use of any special stays for this purpose.

The outer casing 11 of the generator has at the front a feed-opening 15 and ash-pit opening 16 supplemental to the feed and ash-pit openings of the generator-shell and provided with suitable doors.

In stationary generators the outer casing may be composed of brickwork; but in generators for locomotive or marine usea metallic casing will usually be employed.

Having thus described my invention, I

claim and desire to secure by Letters Patent A steam-generator comprising a fire-box and a longitudinal flue, a casinginclosing said fire-box and having a cylindrical barrel inclosing the fine so as to provide a water-chamber containing said fire-box and flue, and transverse tubes extending between the firebox and its inclosing casing and between the cylindrical barrel and flue, in combination with an outer casing containing a combustionchamber which communicates through said tubes with the fire-box and flue, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ROBERT J. BARTON.

Witnesses:

F. E. BEOHTOLD, J 0s. H. KLEIN. s 

